A Canadian bridge uses a novel technique to keep its roadbed clear of black ice. Designers testing the concept chose an Internet-enabled DA system to allow them to track the multiple temperatures and strains involved.

In April 2007, a gasoline tanker crashed and burned while negotiating the MacArthur Maze, a network of interstate connections around the San Francisco/Oakland Bay Bridge in California. The resulting blaze was so intense that it caused parts of the I-580 overpass to crash onto the interstate below.

The GPS-based system provides 3D coordinates with corresponding time, making it possible to derive the frequency of structural movements.

New Hampshire's Department of Transportation, in conjunction with Plymouth State University, is about to tackle a particularly thorny problem: unpredictable road surface conditions. The Road Weather Information System (RWIS) consists of multiple sensors and towers that report local conditions to the DOT and other agencies. Let's take a closer look.

This article presents both a brief explanation of hazardous location requirements and an attempt to unravel the codes used to identify them. It is not intended for engineers designing the actual electrical equipment, but rather for those who need enough basic information to properly interpret and specify the right electrical equipment for installation on their machinery.